IEI Integration PCISA-9652 v1.01 - Manual (Page 45)

PCISA -9652 Half-Size CPU Card
Page 25
Two PCIe x1 lanes are connected to two Intel® PCIe GbE connectors
2.7.2 Intel® 82573L PCIe GbE Controller
Two RJ-45 Ethernet LAN connectors are interfaced directly to two Intel® 82573L PCIe
GbE controllers. The Intel® 82573L PCIe GbE controller is a compact, single-port
integrated physical layer (PHY) device with its own Memory Access Controller (MAC) and
interfaced to the Intel® ICH8ME Southbridge through a PCIe x1 lane. The Intel® 82573L
GbE controllers are shown in Figure 2-12 below.
Figure 2-12: Intel® 82573L PCIe GbE Controllers
Some of the features of the Intel® 82573L are listed below:
2 Gbps peak bandwidth per direction
PCI Express Rev 1.0a specification
High bandwidth density per pin
Wide,pipelined internal data path architecture
Optimized transmit (Tx) and receive (Rx) queues
32 KB configurable Rx and Tx first-in/first-out (FIFO)
IEEE 802.3x*-compliant flow-control support with software controllable pause
times and threshold values
Programmable host memory Rx buffers (256 B-16 KB)
Descriptor ring management hardware for Tx and Rx